from math import sqrt


def add(x, y):  # 加法操作
    return x + y


def my_min(x, y):  # 减法操作
    return x - y


def mul(x, y):  # 乘法操作
    return x * y


def div(x, y):  # 除法操作
    return x / y


def exact_div(x, y):  # 整除操作
    return x // y


def my_remainder(x, y):  # 取余操作
    return x % y


def my_power(x, y):  # 幂操作
    return x ** y


def my_sqr(x):  # 开方操作
    return sqrt(x)


if __name__ == '__main__':
    print(add(12, 15))
    print(my_min(50, 20))
    print(mul(10, 10))
    print(div(20, 2))
    print(exact_div(20, 2))
    print(my_remainder(20, 3))
    print(my_power(2, 3))
    print(my_sqr(4))
